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Chloroacetic anhydride

Basic information Safety Supplier Related

Chloroacetic anhydride Basic information

Product Name:
Chloroacetic anhydride
Synonyms:
  • chloro-aceticacianhydride
  • Chloroacetyl anhydride
  • chloroacetylanhydride
  • chloroethanoicanhydride
  • Monochloroacetic anhydride
  • sym-dichloroaceticanhydride
  • CHLOROACETIC ANHYDRIDE
  • CHLOROACETIC ACID ANHYDRIDE
CAS:
541-88-8
MF:
C4H4Cl2O3
MW:
170.97
EINECS:
208-794-2
Product Categories:
  • Building Blocks
  • Carbonyl Compounds
  • Pharmaceutical Intermediates
  • Carboxylic Acid Anhydrides
  • Chemical Synthesis
  • Organic Building Blocks
Mol File:
541-88-8.mol
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Chloroacetic anhydride Chemical Properties

Melting point:
51 °C
Boiling point:
203 °C
Density 
1.449
vapor pressure 
<0.75 mm Hg ( 20 °C)
refractive index 
1.4730 (estimate)
Flash point:
>230 °F
storage temp. 
Hygroscopic, -20°C Freezer, Under inert atmosphere
solubility 
Freely soluble in ether, chloroform. Slightly soluble in benzene. Insoluble in cold ligroin
form 
Crystals, Chunks or Low Melting Mass
color 
brown
Sensitive 
Moisture Sensitive
Merck 
14,2113
BRN 
774533
Stability:
Moisture Sensitive
InChIKey
PNVPNXKRAUBJGW-UHFFFAOYSA-N
CAS DataBase Reference
541-88-8(CAS DataBase Reference)
EPA Substance Registry System
Acetic acid, chloro-, anhydride (541-88-8)
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Safety Information

Hazard Codes 
C,T
Risk Statements 
34-36/37-43-25
Safety Statements 
26-28-36/37/39-45-27
RIDADR 
UN 3261 8/PG 2
WGK Germany 
3
10-19-21
Hazard Note 
Highly Toxic/Corrosive/Lachrymator
TSCA 
Yes
HazardClass 
8
PackingGroup 
II
HS Code 
29159000
Hazardous Substances Data
541-88-8(Hazardous Substances Data)

MSDS

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Chloroacetic anhydride Usage And Synthesis

Chemical Properties

brownish semi-transparent crystals, chunks or low

Uses

Chloroacetic anhydride has been used in the synthesis of 3,3-bis(sulfonato)-4,4-bis(chloroacetamido)azobenzene (BSBCA), a water-soluble, thiol-reactive and photo-switchable cross-linker, D,L-7-azatryptophan, 2-methyl-[3,4-di-O-acetyl-6-O-(chloroacetyl)-1,2-dideoxy-α-D-glucopyrano]-[2,1:4,5]-2-oxazoline.

Uses

In N-acetylation of amino acids in alkaline solution; preparation of cellulose chloroacetates.

Preparation

chloroacetic anhydride Synthesis: Powdered s odium monochloroacetate(113.3g, 1.138 mol) was added slowly for a period of 15 min at room temperature (which slowly raises to 60°C) to a stirred solution of commercially available chloroaceyl chloride (127.5g, 1mol) in dry benzene (136mL) was refluxed for 9h. Salts were filtered off, the filtrate was cooled to room temperature, diluted with n-hexane and further cooled to 0°C. The solid separated was then filtered, washed with dry hexane and dried to yield chloroacetic anhydride as white crystalline compound in 60% yield (80g); mp=46-49°C [Lit. mp=46°C]. Alternatively, the benzene layer was directly subjected to high vacuum distillation.The product collected at 109-10°C at 10mm vacuum on cooling chloroacetic anhydride in lump form in 70 % yield (93g). It was observed that, the latter method gives anhydride in lump form while the former method gives in crystalline form.

Purification Methods

Crystallise the it from *benzene. [Eglinton et al. J Chem Soc 1860 1954, Beilstein 2 IV 487.]

Chloroacetic anhydride Preparation Products And Raw materials

Preparation Products

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